A small biz owner that I used to contract with was having a disagreement with American Airlines over the phone because when he was asked to provide his email, he gave an obviously adversarial email taking advantage of his catch-all. I couldn't hear the other side of the conversation, but it was obvious they did not believe that the email was legit. I don't remember the exact address provided, but something along the lines of 'americanairlinesisajoke@domain.com'. The conversation went on for over 10 minutes just over the legitimacy of the email address nevermind the actual issue the necessitated an actual phone call in the first place.

He's the type that also will string along the spam callers until they hang up on him, so he enjoys these conversations.